Umbrella notch and runner



(N0 Model.)

J. a. POWELL. I UMBRELLA NOTGH AND RUNNER.

No.314,394. Pate nted-Mar.2 4,1885;

6. Jecidm on line 1 %61 5 NlTED STATES a'rnwr Eric's.

JOHN G. POWVELL, OF PHILADELPHIA, PENNSYLVANIA.

UMBRELLA NOTCl-l AND RUNNER.

SPECIFICATION forming part of Letters Patent No. 314,39d, dated March 24-, 1885.

(No model.)

To all whom it may concern.-

Be it known that 1, JOHN G. PownLL, a citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented certain Improvements in Umbrella Notches and Runners, of which the following is a specificat-ion.

My invention consists of the cheap castmetal-finished notches and runners described hereinafter, as economical substitutes for the more costly notches and runners now used in manufacturing umbrellas and parasols.

In the accompanying drawings, Figure 1 is an exaggerated perspective view of my improved notch for umbrellas and parasols; Fig. 2, a plan view; Fig. 8, a section on the line 1 2, Fig. 2; Fig. 4, a section on the line 3 4, Fig. 2; Figs. 5 and 6, a plan view and vertical section of an ordinary notch, and Fig. 7 a modification.

In manufacturing ordinary notches for umbrellas and parasols the plan has been to first make crude castings of brass, each casting comprising acylindrical portion, a, and a rim, 1), (shown in Fig. 6,) then to turn the circumferential groove (1 in the rim, and finally to out the radial slots 0 in the same by a millingtool.

I have found that a completely-finished and cheap notch can be made by casting in a metal mold an alloy which will melt at a comparatively low temperature, but which is as hard or nearly as hard as brass when cool.

It should be here understood that I do not desire to claim, broadly, in this application a pressurecast umbrella notch or runner having the usual circumferential groove and radial slots and a mold-finished surface and skin, as this is described and claimed in an application filed by me November 30, 1883, Serial No. 113,168, this application having now been divided, and a separate application for a patent having been forwarded for the said notch or runner.

My present application is restricted to a notch or runner of this class constructed in the peculiar manner which I will proceed to describe, the main object being to economize material without ,any loss of strength. The notch has the hollow cylindrical portion a, which is comparatively thin and light, as itis strengthened by the annular rib a. There are radial slots 0 in the rim 6, as usual, for

receiving the ends of the umbrellaribs; but each slot is bounded laterally by ribs or checkpieces ff, and there are as many recesses or cavities h as there are radial slots, at saving of metal being due to these cavities, and this saving is effected without any reduction of effective strength, for the cheek-pieces are sufficiently strong to resist any lateral strain to which they maybe subjected. The two cheekpieces of each slot are preferably connected together by a web, 6,- but this may be solight as to contribute but little to the weight of the notch. In the rim of the notch there is the usual circumferential groove, d, for receiving the wire by which the ribs of the umbrella are pivoted to the notch, and there is the re cess to, Fig. 1., which receives the twisted ends of the wire. as in common notches. The circumferential groove is bounded above by the slotted flange m and below by the slotted flange a, the upper flange being light, but strengthened by the cheek-pieces. Economy of metal, however, is due mainly to the cavities 72. While this economy may appear to be trifling when viewed in connection withasingle notch, it becomes an important matter when we bear in mind the large number of notches demanded by the umbrella trade. A still lighter notch is shown in Fig. 7, the cheekpieces f being less prominent in this instance than in the notches described above. The

-flange a of the rim, moreover, is rece sed on the under side at q, cheek-pieces or ribs eX- tending, if desired, across this recess.

It will be understood that wherever I have introduced the word notch in this specification it is intended to include a runner, which differs from a notch only in the length of the cylindrical portion a.

I claim as my invention-- A cast-metal notch in which each radial slot in the upper portion is bounded laterally by cheek-pieces ff, and in which there are as manycavities h as there are radial slots, substantiall y as set forth.

In testimony whereofl have signed my name to this specification in the p rcsen cc of two subscribing witnesses.

JOHN G. POWELL.

\Vitnesses:

J om: E. PARKER, HARRY SMITH.

ISO 

